← All changes | back/Helpers/ImageHelper.php +271 -0 10.10.1 → 11.1.0 View file →

		@@ -1,0 +1,271 @@
	1	+<?php
	2	+
	3	+namespace AcyMailing\Helpers;
	4	+
	5	+use AcyMailing\Core\AcymObject;
	6	+
	7	+class ImageHelper extends AcymObject
	8	+{
	9	+ public string $error = '';
	10	+ // New Height the picture should be
	11	+ public int $maxHeight;
	12	+ // New Width the picture should be
	13	+ public int $maxWidth;
	14	+ // Folder where pictures should be stored
	15	+ public string $destination;
	16	+
	17	+ public function removePictures(string $text): string
	18	+ {
	19	+ $return = preg_replace('#< *img((?!content_main_image)[^>])*>#Ui', '', $text);
	20	+
	21	+ // Clean JCE caption
	22	+ return preg_replace('#< *div[^>]*class="jce_caption"[^>]*>[^<]*(< *div[^>]*>[^<]*<\/div>)*[^<]*<\/div>#Ui', '', $return);
	23	+ }
	24	+
	25	+ public function available(): bool
	26	+ {
	27	+ if (!function_exists('gd_info')) {
	28	+ $this->error = 'The GD library is not installed.';
	29	+
	30	+ return false;
	31	+ }
	32	+ if (!function_exists('getimagesize')) {
	33	+ $this->error = 'Cound not find getimagesize function';
	34	+
	35	+ return false;
	36	+ }
	37	+ if (!function_exists('imagealphablending')) {
	38	+ $this->error = "Please make sure you're using GD 2.0.1 or later version";
	39	+
	40	+ return false;
	41	+ }
	42	+
	43	+ return true;
	44	+ }
	45	+
	46	+ //This function will check all images from the input and return an output with the pictures transformed with the right size
	47	+ public function resizePictures(string $input): string
	48	+ {
	49	+ $this->destination = ACYM_MEDIA.'resized'.DS;
	50	+ acym_createDir($this->destination);
	51	+ $content = acym_absoluteURL($input);
	52	+
	53	+ //regex take all images:
	54	+ preg_match_all('#<img([^>]*)>#Ui', $content, $results);
	55	+ if (empty($results[1])) {
	56	+ return $input;
	57	+ }
	58	+
	59	+ $replace = [];
	60	+
	61	+ foreach ($results[1] as $onepicture) {
	62	+ //Check if there the "donotresize" element inside, we don't resize it.
	63	+ //It can be either in the class or in the filename itself
	64	+ if (strpos($onepicture, 'donotresize') !== false) {
	65	+ continue;
	66	+ }
	67	+
	68	+ //Take the path
	69	+ if (!preg_match('#src="([^"]*)"#Ui', $onepicture, $path)) {
	70	+ continue;
	71	+ }
	72	+ $imageUrl = $path[1];
	73	+
	74	+ //images paths on joomla 4 have some content like : #joomlaImage... , we delete it to get and resize the image without errors
	75	+ $imageUrl = preg_replace('/#joomlaImage.*/', '', $imageUrl);
	76	+
	77	+ //We are nice guys... sometimes users use www. or not... so we convert both, same thing for httpS or http
	78	+ $imageUrl = acym_internalUrlToPath($imageUrl);
	79	+
	80	+ $newPicture = $this->generateThumbnail($imageUrl);
	81	+
	82	+ $newDimension = 'max-width:'.$this->maxWidth.'px;max-height:'.$this->maxHeight.'px;';
	83	+
	84	+ //Maybe we don't need to resize anything...
	85	+ if (empty($newPicture)) {
	86	+ if (strpos($onepicture, 'style="') !== false) {
	87	+ $replace[$onepicture] = preg_replace('#style="([^"]*)"#Uis', 'style="'.$newDimension.'$1"', $onepicture);
	88	+ } else {
	89	+ $replace[$onepicture] = ' style="'.$newDimension.'" '.$onepicture;
	90	+ }
	91	+ continue;
	92	+ }
	93	+
	94	+ //Because the ACYM_ROOT may be empty, we only make sure to replace the first instance found.
	95	+ $newPicture['file'] = preg_replace('#^'.preg_quote(ACYM_ROOT, '#').'#i', ACYM_LIVE, $newPicture['file']);
	96	+ $newPicture['file'] = str_replace(DS, '/', $newPicture['file']);
	97	+ //replace the image url now with the new one...
	98	+ $replaceImage = [];
	99	+ $replaceImage[$path[1]] = $newPicture['file'];
	100	+ //replace information if we had some (height,width...)
	101	+ if (preg_match_all('#(width|height)(:|=) *"?([0-9]+)#i', $onepicture, $resultsSize)) {
	102	+ foreach ($resultsSize[0] as $i => $oneArg) {
	103	+ $newVal = (strtolower($resultsSize[1][$i]) == 'width') ? $newPicture['width'] : $newPicture['height'];
	104	+ if ($newVal > $resultsSize[3][$i]) {
	105	+ continue;
	106	+ }
	107	+ $replaceImage[$oneArg] = str_replace($resultsSize[3][$i], $newVal, $oneArg);
	108	+ }
	109	+ }
	110	+
	111	+ $replace[$onepicture] = str_replace(array_keys($replaceImage), $replaceImage, $onepicture);
	112	+
	113	+ // Make sure that we resized the image
	114	+ if (strpos($replace[$onepicture], 'width') === false) {
	115	+ if (strpos($onepicture, 'style="') !== false) {
	116	+ $replace[$onepicture] = preg_replace('#style="([^"]*)"#Uis', 'style="'.$newDimension.'$1"', $replace[$onepicture]);
	117	+ } else {
	118	+ $replace[$onepicture] = ' style="'.$newDimension.'" '.$replace[$onepicture];
	119	+ }
	120	+ }
	121	+ }
	122	+
	123	+ if (!empty($replace)) {
	124	+ $input = str_replace(array_keys($replace), $replace, $content);
	125	+ }
	126	+
	127	+ return $input;
	128	+ }
	129	+
	130	+ public function generateThumbnail(string $picturePath): array
	131	+ {
	132	+ $paramsPos = strpos($picturePath, '?');
	133	+ if ($paramsPos !== false) {
	134	+ $picturePath = substr($picturePath, 0, $paramsPos);
	135	+ }
	136	+
	137	+ [$currentwidth, $currentheight] = @getimagesize($picturePath);
	138	+ if (empty($currentwidth) || empty($currentheight)) {
	139	+ return [];
	140	+ }
	141	+ $factor = min($this->maxWidth / $currentwidth, $this->maxHeight / $currentheight);
	142	+ if ($factor >= 1) {
	143	+ return [];
	144	+ }
	145	+ $newWidth = round($currentwidth * $factor);
	146	+ $newHeight = round($currentheight * $factor);
	147	+
	148	+ if (strpos($picturePath, 'http') === 0) {
	149	+ $filename = substr($picturePath, strrpos($picturePath, '/') + 1);
	150	+ } else {
	151	+ $filename = basename($picturePath);
	152	+ }
	153	+
	154	+ if (substr($picturePath, 0, 10) == 'data:image') {
	155	+ //It's a picture in base64 encoding... we will apply an extension name and name based on the content...
	156	+ preg_match('#data:image/([^;]{1,5});#', $picturePath, $resultextension);
	157	+ if (empty($resultextension[1])) {
	158	+ return [];
	159	+ }
	160	+ $extension = $resultextension[1];
	161	+ $name = md5($picturePath);
	162	+ } else {
	163	+ $extension = strtolower(substr($filename, strrpos($filename, '.') + 1));
	164	+ $name = strtolower(substr($filename, 0, strrpos($filename, '.')));
	165	+ //We add the creation date of the file so if the file is modified, we will generate a new thumbnail
	166	+ //No need to use the full date, the last 4 characters will be enough!
	167	+ $name .= substr(@filemtime($picturePath), -4);
	168	+ }
	169	+
	170	+ $newImage = md5($picturePath).'-'.$name.'thumb'.$this->maxWidth.'x'.$this->maxHeight.'.'.$extension;
	171	+ if (empty($this->destination)) {
	172	+ $newFile = dirname($picturePath).DS.$newImage;
	173	+ } else {
	174	+ $newFile = $this->destination.$newImage;
	175	+ }
	176	+
	177	+ //The new file already exists, we don't have to create a new one
	178	+ if (file_exists($newFile)) {
	179	+ return [
	180	+ 'file' => $newFile,
	181	+ 'width' => $newWidth,
	182	+ 'height' => $newHeight,
	183	+ ];
	184	+ }
	185	+
	186	+ // Checks the real file type as it can be renamed, but not available on all servers
	187	+ if (function_exists('exif_imagetype')) {
	188	+ $imageRealType = exif_imagetype($picturePath);
	189	+ } else {
	190	+ if ($extension === 'gif') {
	191	+ $imageRealType = IMAGETYPE_GIF;
	192	+ } elseif ($extension === 'jpg' || $extension === 'jpeg') {
	193	+ $imageRealType = IMAGETYPE_JPEG;
	194	+ } elseif ($extension === 'png') {
	195	+ $imageRealType = IMAGETYPE_PNG;
	196	+ } elseif ($extension === 'webp') {
	197	+ $imageRealType = IMAGETYPE_WEBP;
	198	+ } else {
	199	+ return [];
	200	+ }
	201	+ }
	202	+
	203	+ switch ($imageRealType) {
	204	+ case IMAGETYPE_GIF:
	205	+ $img = imagecreatefromgif($picturePath);
	206	+ break;
	207	+ case IMAGETYPE_JPEG:
	208	+ $img = imagecreatefromjpeg($picturePath);
	209	+ break;
	210	+ case IMAGETYPE_PNG:
	211	+ $img = imagecreatefrompng($picturePath);
	212	+ break;
	213	+ case IMAGETYPE_WEBP:
	214	+ if (function_exists('imagecreatefromwebp')) {
	215	+ $img = imagecreatefromwebp($picturePath);
	216	+ }
	217	+ break;
	218	+ default:
	219	+ return [];
	220	+ }
	221	+
	222	+ if (empty($img)) {
	223	+ return [];
	224	+ }
	225	+
	226	+ $thumb = imagecreatetruecolor($newWidth, $newHeight);
	227	+
	228	+ if (in_array($imageRealType, [IMAGETYPE_GIF, IMAGETYPE_PNG])) {
	229	+ imagealphablending($thumb, false);
	230	+ imagesavealpha($thumb, true);
	231	+ }
	232	+
	233	+ if (function_exists('imagecopyresampled')) {
	234	+ imagecopyresampled($thumb, $img, 0, 0, 0, 0, $newWidth, $newHeight, $currentwidth, $currentheight);
	235	+ } else {
	236	+ ImageCopyResized($thumb, $img, 0, 0, 0, 0, $newWidth, $newHeight, $currentwidth, $currentheight);
	237	+ }
	238	+
	239	+ ob_start();
	240	+ switch ($imageRealType) {
	241	+ case IMAGETYPE_GIF:
	242	+ $status = imagegif($thumb);
	243	+ break;
	244	+ case IMAGETYPE_JPEG:
	245	+ $status = imagejpeg($thumb, null, 100);
	246	+ break;
	247	+ case IMAGETYPE_PNG:
	248	+ $status = imagepng($thumb, null, 0);
	249	+ break;
	250	+ case IMAGETYPE_WEBP:
	251	+ $status = imagewebp($thumb, null, 100);
	252	+ break;
	253	+ }
	254	+ $imageContent = ob_get_clean();
	255	+
	256	+ $status = $status && acym_writeFile($newFile, $imageContent);
	257	+ imagedestroy($thumb);
	258	+ imagedestroy($img);
	259	+
	260	+ //We could not create the picture... so let's resize it anyway
	261	+ if (!$status) {
	262	+ $newFile = $picturePath;
	263	+ }
	264	+
	265	+ return [
	266	+ 'file' => $newFile,
	267	+ 'width' => $newWidth,
	268	+ 'height' => $newHeight,
	269	+ ];
	270	+ }
	271	+}